Insect trap



vll

mvENoR Q .Wz'lzam Mln/'10h ATTORNEY Patented Feb. 19, 1929.

yumrr.,nl Simms mii-:m operen WEINBGH, 'oF H'oNoLULUg TRRITORY oF HAWAII.y msnen Trini.

Application medlnecember- 14, 1927-. serial "Ne 239,995.

This invention relates to improvements in insecttreps generally, and'inore particularly to `etype of euchtraps adepted 'to prevent the propagation of mosquitoes.

escape-of the larvae after the' eggs have hatched.

Another object. of tlieinvention is torprovide for aftrap structure as' helleinbeio'recher` acteri'zednd onewhe'reinfthe niosquitolervee,-` efter being; hatched in e' solution contained in the trap; are. suo'ca'tedin their e1`1- deevors to reechthesurfece ofthe solution for nir, and hence t-heydie; y

lWith the foregoingflend? other equally importent-Y objects in view, the invention resides in the Vcertain new and 'useful combinations, constructions end: arnange'inentsj off partis' es will be hereine'f'ternioref fullydescribed, set forth inl the appended" clli`i'tns',l-ant'il`l ustrated in the'eocoinpanyngidrewinginlwhich: l

Figure lA is're` vertical sefetiony dirmi-gli one forni of the trap, and j Figure 2 is n similar' view'th'rongh alsecond Y or preferred e'inbodiiiient` thereof. Y.

Referring to tlie drawing, `and more n particulztrlyto' :Fi gure lA thereof, the' embodiment of the invention as shown' therein comprises n container l0, preferably in the form of a cylindrical receptacle, lor other ti1beililiebmly, which is open .at it's ijipperside.-v Supported Within the container l0 is'ian invel'tedfunnell Sliuped' body 1.1, liitving it larger endl of a slightly lese'dlmne'terthan 'the interior diemeter of the container. This lower lerger end of the body ll isy disposcdf concentriclly of the innerv Wall of the'c'onttiner 10, and iS epucerleliglitl y nb'cvethe bot'tnmwallf thereof in e incliner to providevfor :infannuler pae- :sugewuy l2 about its edge. The upper end or upcxo" the conical. body ll'iS open, sf at 13, :indrtliis openingV 13 colnmunicatesjwitl'i tlic interiorof un inverted cylindrical body oi' receptacle 14',v W-hiclifniay be in the: fbrm of e tumbler'hs'ivin'g itsy lower open end en'- geged over the sin'afller end or apex of the conical body ll.- g T111 un?, tliccontuinerlfOlWilllbepfilldwfith n 'evornblo tio-the use of the/,same for :n pnipfiieos" by'i'iiosqnitnee, whichliilizlu tion Will also lill the cylindrical"receptaclefory tumbler14l and the interior of the conical body 1.11l The receptacle or tumbler' 14fmey have a smalll quantityoi oil placed therein",

Which-will forni u film, es at a, on the surfer-Ce of' the solutionfillingthe seme.' In ece-ordi' ance with' the' kno-Wn4 )charenteristicev and 'habitsv olfI theino'squito l-rvee, when" eggs'dc1 posi'tedlin tlie solution are hatched, the larv* willI swim to lthe bottom of` the container 1'0" forrfoodgendwill retumtdthefsurfaceoftheselution te hreathe. Ae" they swim ldow/1'1"'- Werd, the lurvse'willent'er the annuler es`l s'ege'v'vay '12, and pass' beneath tlie'conic'albody 11:,.en-d, u'lieirettempting to ietrurnto 'the'surfece ofE the solution, ef large majority' ofthe' seine willl pass upwardly 'eh'rcnghthe opening 1-3'in lthe upper end or epexjo'ftiiebody 1l, endinto the inverted receptacle or tumbler' l14tvv where, for the lack off air, 'they die.

Referring now to Figure' 2f, wherein is shown thees'eeondior prefeiredffor-nrof'the invencion, 'the container lo@ iey substantially lof une formas in the' firetl'inet'ance, hun the fun; n

nel-like yo1 'conicl liody l-"D is f poisitioned in*- Wzirdly ofthe saine' with itesineller'endf'or apex pointingl downward, While'y its. upper lrger'endfis'offe dieineoer toenuglycngege or sent'innnediet'ely Within the` open endof the container. Tlieope'ning 13aA in the lower end or epe'XA of the conical body "11'u is ypos-itioned in slightly spaced: relation :ebovetheV bobtomfwall oftlecontaine'i" lOto alloivfth'e breedingl solution to ill" the' enclosed interior of. the lait-ter.' A smeller-`endinverted conical bodyl loviv is supported within the interior' of theflergerconicalbody 115,' witliits lowerand larger endV disposedl in Slightly 'spec-edf, con'- centiic reliitidn with respect thereto to prof'- vide for ay passageway' 12e, corresponding"` to the paSsageWaylQ, 'es inthe first instance of the' invention, therebetween. vThe uV vperfend 01"epeX-oftliis'sfmaller conical body l 'a ispro-A vided Witll en opening 16a, Wllicli communi"- entes withthe interior ofen inverted" cylin'- d rcalreceptacleor tumbler lila. 4After the `Ina-nner nfs in-the'first instance, this receptacle or tinnble'r'leEt has its lewer open end engaged' over the up er end or' apex'of tliesm'aller"coni` cal: body Ade-in tgriefi'et` insteneeof the invention,' :if` suit'able breeding Solution 'is 'poured inthe container 1U,-u'ntilitI` islyf'illed yor nearly so,- nnd, when filled thesoliitio' elec oil, however, is placed within the container l0 to provide ior a film of the same on the surface oit the solution, as at to lill the space between the conical body llil `and the interior of the container l()at enclosed thereby to provide an air-tight seal at the point of contact of the upper larger end ot the conical body 11 with the wall of the container 10a. Also, a small. quantity olf oil is placed within the receptacle or tumbler lliL to provide for a similar iilm of oil, as at a', on the surface of the solution filling the latter'. Y

In this latter form of the device, mosquitoes will deposit their eggs in the solution, and Jthe larvae, when the eggs areh a tched,will swim toward the bottom oi the container i0 in l search of food, and will traverse the passageway 12a and pass downwardly through the opening 13a, in the lower rend or apex of the conical body 11a. .Hei-e, whenthey attempt to return to the surface oi the solution, some of them will swim upward within the space between the inner wall oi' the container l0a and the opposed wall oi the conical body lla, where they will be suilocated for lack of air, while others will pass upwardly through the opening 13a, in the larger conical body 11, and from thenceupwardly through the opening 16a in the upper end or apex oit the smaller conical body 15d and into the receptacle or tumbler 14a, where they, in turn, will also be suocated for lack oix air. It is, of course, obvious that a few of the larvae may escape upwardly through the passageway 12, and thus return to the surface of the solution, but the arrangement of the partsy are such that their chances are minimized, or otherwise rendered impossible. 1

It is to be noted that in either instance of the invention, the receptacles or tuinblers 14 and 14a may have substituted for the saine suitable lengths of tubing, or other forms oil hollow cylindrical. bodies, open at both ends, in which case, the upper open end of the latter will be projected slightly above the surface of the solutionin the containers 10 or l0, so that a iilm of oil c may be floated on the surface of the solution .filling the cylindrical bodies to the level of the solution in the containers l0 or 10a. Such substitute cylindrical bodies are indicated by brolren lines in both Figures l and 2 of the drawing, and that of Figure 1 is designated by the numeral 14;', while the one in Figure 2 is designated as at 14'). `A cover 17 or 17*l may be provi ded for either or both of the forms ot' tho traps 10 and 10a', as is indicated, Ator use when transporting the traps from one point of use to another, or to prevent the same from :tilling to the point of overtlow when it is raining.

Without further description., it is thought that the features and advantages of the invention will be readily apparent to those skilled in theV art, and it will. oit course be understood that changes in the form, proportion. and

minor details of construction may be resorted to, without departing lroni the spirit of the invention or its scope as claimed.

Having thus fully described the invention, what is claimed is:

l. A mosquito trap comprising a container `open at its upper end and normally filled with a breeding solution, and means immersed in the breeding solution ior trapping and suffecating the hatched larvae in their eiiorts to return to the surface orP the breeding solution for air. Y

2. yA mosquito trap comprising a container open at its upper end and normally filled with. a breeding solution, and means supported within said container and open at its lower end to house a portion of the breeding solu-V tion and to trap therein and sutlilocate the hatched larvae in their eii'orts to return to the vsurface of the breeding solution for air.

3. A mosquito trap -comprising a container open at its upper end and normally iilled with a breeding solution, a hollow body supported within sai-d container, said body having its lower end open for the ingress thereto of the breeding solution from said container and for the trapping within the same of the hatched larvae in their efforts to return to the surfacev ot the breeding solution, and means closing the upper end of said body to prevent Y contact ot the upper surface of the solution within the same with the air whereby the larvae rising to the lsurface of the solution within said body will be suftocated.

4. A mosquito trap comprisinga container open at its open-end and normally filled with abreeding solution, a hollow body supported within said container, said body having its lower end open for the ingress thereto of the breeding solution 'from said container and tor `the trapping within the same of ythe hatched larvae in their eli'orts to return to the surface oil the breeding solution, and a tilm ol oil closing the upper end of said body Vto prevent contact of the upper surface of the solution within the same with -the air, whereby the larvae rising to the surface of the solution within said body will be sufiocated.

5. .A mosquito trap comprising a container open at its upper end and normally .iilled with a breeding solution, a hollow body supported within said container, said body having its upper end closed and its lower end open for the ingress thereto ot a portion of thebreeding solution from the container and i'or'trapw ping within the same of the hatched larvae in their eii'orts to return to the surface of the breeding solution, and a ilin of oil` on the surface of the'breeding solution within said body to provide an air sealV thereto.

6. A mosquito trap comprising a cylindriend arranged in closely spaced relation to the opposed wall of the container to form. a restricted passageway therebetween, said conical body being open at its apex, and a cylinclricaly receptacle having its lower end open and engaged over the apex end of said conical body, the breeding solution from the container filling the interior of said conical body and said receptacle. t i

7. A mosquito trap comprising a cylindrical container open at its'upper end and normally filled with a breeding solution, a conical body disposed within said opening and having the peripheral edge of its larger end arranged in substantially contacting relation with theinner wall of the container and substantially in the plane ofthe normal levelof the breeding solutionwithin the latten-the lower apex end of `said body being open, an

inverted conical body within said lirst mentioned conical body and having its larger end l disposed in closely spaced relation with respect to the opposed wall thereof, the apex end of said last-mentioned conical body being open, and a cylindrical receptacle openy at its lower end and engaged over the apex end of said last-mentioned conical body, the

interiors of said conical bodies and said rey ceptacle being filled with the breeding solution from said container. Y

and suffocating the hatched larvae in theirefforts to reachthe surface of the liquid for arr.

yWILLIAM WEINRICH. 

